2-1 relations and functions

Question 1

relation

Answer 1

set of pairs of input and output values

Question 2

domain

Answer 2

is the set of all inputs, or x-coordinates of the ordered pairs

Question 3

range

Answer 3

set of all outputs, or y-coordinates of the ordered pair

Question 4

mapping diagram

Answer 4

links elements of the domain with corresponding elements of the range

Question 5

function

Answer 5

when each element of the domain is paired with exactly on element in the range

Question 6

vertical-line test

Answer 6

graph of a relation to tell whether the relation is a function

Question 7

function notation

Answer 7

f(x) “f of x” or “a function f of x.”